“Professor Oscar” then gave an excellent presentation on climate change. There are many encouraging developments with record numbers of coal plants being shut down and record numbers of solar panels being installed.

One of the most dramatic developments is Tesla’s “Power Wall,” a home size battery (about the size of a heat pump), that could store extra solar and wind energy for later use. Some of the most forward thinking examples are on farms in the heartland where solar and wind energy are produced and trees are planted for carbon sequestration.